Improvement in sprimg bed-bottoms



W. R. CUNNINGHAM.

SPRING EEB BGTTOM. N0 18-0555 I Pa-manned Aug.1,1876.

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WILLIAM R. CUNNINGHAM, OF CLYDE', CHIC.

IMPRCVEMENT EN SPRING BEDBTTOMS.

Specication forming partiof Letters Patent No. hh, dated August 1, 1876; application tiled December 18, A1875.

To all whom it may concern.-

Be it known that I, WILLIAM R. CUN- NINGHAM, of Clyde, in the county of Sandusky and State of Ohio, have invented a new and valuable Improvement in Spring Bed- Bottoms; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making` a part otA this speciiication, and to the letters and figures of reference marked thereon.

Figure 1 ot' the drawings is a representation of a plan view ot' my bed-bottoni; and Figs. 2, 3, 4, and 5 are detail views thereof.

This invention has relation to improvements in spring bed-bottoms; and it consists in the arrangement and novel construction, in connection with a rectangular frame adapted to be seated in a bedstead, ot'a number of longitudinal linked springs centrally arranged, and or" a number of transverse springs linked to each other and to the said central springs, the whole being secured to the said frame, whereby a very complete, serviceable, andv elastic bottom is obtained.

In the annexed drawings, the letter A designates an oblong, preferably Wooden, frame, which may be a component part of the bedstead, or separate and det-ached therefrom, as I may elect. B represents the longitudinally arranged central springs, arranged in sets of three, and at a suit-able distance apart, and C are the transverse springs. As shown in Fig. 1, these springs are ofthe form called helical, and they are arranged at right angles to each other, and in the vsame horizontal plane, being linked each set to the other, and those of each sct to each other, in the following manner, to wit: Springs B, as aforesaid,'are arranged in sets of three, four, or more, as I may elect, and their hooked endsare engaged with loops a, formed vat the angles and in the sides of an open rectangular wire loop, D. A suitable number of these springs having been joined together, the free ends ot' the end springs are engaged in loops e on one side of a coupler, E, other loops, b, on the other end or side of said coupler being passed over the ends of the spaced tension-rods F, which are hooked over or otherwise suitably secured to the ends of the frame. A tension-bar, d, is

then passed over the rods F, and a nut, o, applied upon their screw-threaded ends, by setting up which nut the bar d will draw the coupler nearer the ends of the frame, thereby taking up the slack of the central 'system of springs and increasing their tension. Springs C are arranged `at a suitable distance apart, and are connected with the central springs and with the frame, as follows r A piece of wire ot' suitable size and length is bent in zigzag form, loops t being formed at its ends and at its angles. rIhis coupling or connection (designated by the letter H) is secured to the sidesof the frame by means ot' nails, screws, or other like devices j, which are passed through one set of loops and forced into the frame, the other set of loops serving to receive hooks upon the ends of springs B. The other ends ot' these springs are hooked into loops l of a zigzag connection, I, formed ot' wire, and differing from connection H only in that it has hooks l' formed at one set ot' an gies, instead of loops. Ihcse hooks are engaged in the end loops a of loops D.

The advantage of this construction is, mainly, that the side ranges of springs are incapablel of sagging, so as to be uncomfortable without some yield ot' the central springs, which requires a yielding of the lateral springs on the other side ot the frame. rI he lilies of' yield ot' these springs beingat right angles to each other, the said springs will mutually'support and sustain each other.

What I claim as new, and desire to secure by Letters Patent, is-

l. In combination with the frame A, thc longitudinally arranged connected helical spring B and the transverse springs C, linked to each other and to the central stantially as described.

2. In combination with the springs B C, arranged at right angles to each other, the zigzag connections II I, substantially as dcscribed.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

WILLIAM R. CUNNINGHAM.

springs, snb- 

